Office listed in NPPES
1300 N Arlington Heights Rd Ste 130, Itasca, IL 60143
(847) 871-4540
Confirm this address and number with the practice. Registry information may be outdated.
Physician directory profile
Mark Christopher Gillis, MD
Itasca, IL
Public records and practice information are labeled by source.
Claimed by a verified representative
Record details
- NPI
- 1992806509
- Registry updated
- 08/31/2023
- Imported
- 2026-11-03
- Registry specialty labels (English)
- Family Medicine
Before arranging a visit
Confirm current services, ages treated, insurance, location, hospital affiliations and appointment availability directly with the practice. An active NPI does not verify current licensure, certification or practice status.
A registry specialty label does not establish that a clinician currently provides the particular care you need.
Background and affiliations
Industry payments
No 2025 general payments from drug or device companies were reported for Mark Christopher Gillis. Research funding is excluded. These payments are public under the Sunshine Act, and a payment does not by itself mean a conflict of interest. CMS Open Payments
Insurance
- Other plans (for example Blue Cross and Blue Shield of Illinois, Illinois Medicaid (HealthChoice Illinois) (Medicaid), UnitedHealthcare) haven't been reported by this office yet. Call to confirm before booking.
Documented Medicare service activity
2024 Medicare-billed services:
Hemoglobin A1c testingMedicare annual wellness and welcome visitsElectrocardiogram (EKG)Flu shotsPneumococcal (pneumonia) vaccination
Reporting year: 2024. These are billed services or units in Original Medicare Part B, not total career experience, all patients, surgical case counts or a quality rating.
Scroll the table sideways to see every column.
| HCPCS | Billed services / units | Beneficiaries in this row | Service description (English) | Billing setting |
|---|---|---|---|---|
| 36415 | 667 | 406 | Insertion of needle into vein for collection of blood sample | Non-facility |
| 80048 | 43 | 42 | Blood test, basic group of blood chemicals (calcium, total) | Non-facility |
| 80053 | 443 | 364 | Blood test, comprehensive group of blood chemicals | Non-facility |
| 80061 | 410 | 336 | Blood test, lipids (cholesterol and triglycerides) | Non-facility |
| 82043 | 77 | 72 | Urine microalbumin (protein) level | Non-facility |
| 82306 | 134 | 127 | Vitamin d-3 level | Non-facility |
| 82565 | 11 | 11 | Blood creatinine level | Non-facility |
| 82570 | 83 | 77 | Creatinine level to test for kidney function or muscle injury | Non-facility |
| 82607 | 56 | 56 | Cyanocobalamin (vitamin b-12) level | Non-facility |
| 82728 | 31 | 28 | Ferritin (blood protein) level | Non-facility |
| 82746 | 19 | 19 | Folic acid level, serum | Non-facility |
| 82947 | 15 | 13 | Blood glucose (sugar) level | Non-facility |
| 83036 | 348 | 259 | Hemoglobin a1c level | Non-facility |
| 83540 | 56 | 46 | Iron level | Non-facility |
| 83550 | 56 | 46 | Iron binding capacity | Non-facility |
More Medicare services (22)
Scroll the table sideways to see every column.
| HCPCS | Billed services / units | Beneficiaries in this row | Service description (English) | Billing setting |
|---|---|---|---|---|
| 83735 | 13 | 11 | Magnesium level | Non-facility |
| 84132 | 14 | 12 | Blood potassium level | Non-facility |
| 84153 | 36 | 33 | Psa (prostate specific antigen) measurement, total | Non-facility |
| 84439 | 14 | 13 | Thyroxine (thyroid chemical), free | Non-facility |
| 84443 | 143 | 131 | Blood test, thyroid stimulating hormone (tsh) | Non-facility |
| 84460 | 21 | 20 | Liver enzyme (sgpt), level | Non-facility |
| 84550 | 19 | 18 | Uric acid level, blood | Non-facility |
| 85025 | 353 | 295 | Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count | Non-facility |
| 85610 | 67 | 19 | Blood test, clotting time | Non-facility |
| 85652 | 21 | 21 | Red blood cell sedimentation rate, to detect inflammation, automated | Non-facility |
| 86038 | 12 | 12 | Screening test for autoimmune disorder | Non-facility |
| 86140 | 17 | 15 | Measurement c-reactive protein for detection of infection or inflammation | Non-facility |
| 93000 | 42 | 40 | Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Non-facility |
| 99212 | 15 | 15 | Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more | Non-facility |
| 99213 | 268 | 185 | Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Non-facility |
| 99214 | 358 | 249 | Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Non-facility |
| G0008 | 37 | 36 | Administration of influenza virus vaccine | Non-facility |
| G0009 | 30 | 30 | Administration of pneumococcal vaccine | Non-facility |
| G0103 | 70 | 70 | Prostate cancer screening; prostate specific antigen test (psa) | Non-facility |
| G0402 | 13 | 13 | Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment | Non-facility |
| G0438 | 16 | 16 | Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit | Non-facility |
| G0439 | 244 | 244 | Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | Non-facility |
Drug billing units (2)
Drug units follow the billing-code definition. They are not the number of treatments, visits, doses or unique patients.
Scroll the table sideways to see every column.
| HCPCS | Drug billing units | Beneficiaries in this row | Service description (English) | Billing setting |
|---|---|---|---|---|
| 90653 | 31 | 31 | Influenza vaccine, inactivated | Non-facility |
| 90677 | 30 | 30 | Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use | Non-facility |
How to interpret these counts
CMS suppresses provider/service rows involving fewer than 11 beneficiaries. Services may repeat for one person, and beneficiaries cannot be added across rows. Facility/non-facility describes billing and does not establish a current hospital affiliation. These counts do not report case complexity, clinical outcomes or whether a treatment is appropriate for you.
Exact CMS source rows for this NPI · Checked 2026-11-03
Common questions
Where is Mark Christopher Gillis's office?
The NPPES registry lists 1300 N Arlington Heights Rd Ste 130, Itasca, IL 60143. Confirm the location before your visit; registry addresses can be out of date.
What phone number is listed for Mark Christopher Gillis?
The registry lists (847) 871-4540. Practices sometimes change numbers; check the practice website if the call does not connect.
What is Mark Christopher Gillis's specialty?
The registry lists Family medicine. A registry specialty is self-reported and does not confirm board certification or the services offered today.
Does Mark Christopher Gillis bill Medicare?
CMS data shows publicly disclosed Original Medicare Part B services billed in 2024 (see above). That does not confirm the practice is accepting new Medicare patients; ask the office.
What is Mark Christopher Gillis's NPI number?
NPI 1992806509, a public identifier from the national registry. It does not by itself confirm a current license.
Patient reviews
Reviews are moderated before publication, and negative reviews are published on the same terms as positive ones. Ratings describe reported patient experience, not clinical quality.
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